Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: selinux: fix NULL-pointer dereference when hashtab allocation fails When the hash table slot array allocation fails in hashtab_init(), h->size is left initialized with a non-zero value, but the h->htable pointer is NULL. This may then cause a NULL pointer dereference, since the policydb code relies on the assumption that even after a failed hashtab_init(), hashtab_map() and hashtab_destroy() can be safely called on it. Yet, these detect an empty hashtab only by looking at the size. Fix this by making sure that hashtab_init() always leaves behind a valid empty hashtab when the allocation fails.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 03414a49ad5f3c56988c36d2070e402ffa17feaf before b17dd53cac769dd13031b0ca34f90cc65e523fab; affected 03414a49ad5f3c56988c36d2070e402ffa17feaf before 83c8ab8503adf56bf68dafc7a382f4946c87da79; affected 03414a49ad5f3c56988c36d2070e402ffa17feaf before dc27f3c5d10c58069672215787a96b4fae01818b |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.82 through 5.10.*; unaffected 5.15.5 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b17dd53cac769dd13031b0ca34f90cc65e523fab
- https://git.kernel.org/stable/c/83c8ab8503adf56bf68dafc7a382f4946c87da79
- https://git.kernel.org/stable/c/dc27f3c5d10c58069672215787a96b4fae01818b
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.